Integrating heat-quantity meter



B. KOCKl INTEGRATING HEAT QUANTITY METER.

APPLICATION FILED MAR. 22, 1919.

Patented Aug. 9, 1921 3 SHEETSSHEET 1.

Inventor 17; Rock,

Attorney B. KOCK.

INTEGRATING HEAT QUANTITY METER.

APPLICATION FILED MAR. 22, I919.

Patented Aug. 9, 1921.

3 SHEETS-SHEET 2- B. KOCK.

INTEGRATING HEAT QUANTITY METER.

APPLICATION FILED MAR. 22, I919.

Patented Aug. 9, 1921.

3 SHEETS-SHEET 3- BIBGER KOG K, OF STOGKHOLM, SWEDEN.

INTEGRATING HEAT-QUANTITY METER.

Specification of Letters Patent.

Patented Aug. 9, 1921.

Application filed March 22, 1919. Serial No. 284,336.

To all whomit ma concern:

Be it known t at I, BIRGER KooK, sub-' and the like provided with atemperature measuring device, adapted to continually indicate thedifference of temperature between the hot water supplied and thatdischarged, and an apparatus for measuring the water quantity passingthrough the pipe system.

The invention consists, chiefly, in that the temperature measuringdevice forms an electrical distant thermometer, the indicating member ofwhich is combined with a device for adding intermittently the momentaryvalue of the deflections, the said adding device being combined with thewater measuring device by means of an electrical apparatus fortransmission of motion so as to be mechanically independent ofthe watermeasuring device. At each time a certain quantity of water, forinstance 1. cubic meter, has passed through the hot water pipe theadding mechanism is broughtinto function and transmits such motion to ameter as corresponds to the restoring motion of the indicating memberfrom the position in which it indicates the momentary difference oftemperature. The integrated end value constitutes a measure of thequantity of heat used.

The invention will be described more clearly below with reference to theannexed drawin s showing some forms of embodiment 0 an integrating heatquantity meter according to this invention.

In the drawings, Figure 1 is a diagrammatical view of one form ofembodiment, and Fig. 2 shows a modification of the connection of same.Figs. 3, 4 and 5 are detail views on an enlarged scale, and Fig. 6- is adiagrammatical assembly view, and Fig. 7 shows a detail belonging to thesame in plan view.

Referring to the drawings, the distant thermometer shown, consists of agalvanometer, the moving system'of which placed between the north-pole Nand the southpole S of a magnet is provided with two reacting windingsor coils 23 and 4-5.

Accordingto Fig. 1, the winding 2-3 is by means of lines 6 and 7connected in parallel with the end points 10, 11 of a resistance Rarranged in the supply pipe A (Fig. 6). The winding 4-5 is connected inan analogous manner by means of lines 8 and 9 in parallel with the endpoints 12, 13 of a reslstance R arranged in the discharge pipe B'. Theresistances R, and R and a calibration resistance R are connected to alighting net-work through the line 14. To the said lighting net-work isalso connected a circuit. breaker 15, which is by suitable means (notshown) acted on by the water quantlty meter 16 (F ig.-6) for each cubicmeter of water that has passed through the said meter. As an example ofsuitable constructions of the water quantity meter and the circuitbreaker Figs. 6 and 7 show a rotary device 76 located within the supplytube A on a shaft 77 and so constructed that it is brought to rotate bythe water supplied through the tube. On this shaft is keyed a bevel gear78 meshing with a bevel gear 79 on a shaft 80. On the opposite end ofthis shaft being located outside the tube A is keyed an S-shaped disk81. Against the circumference of this disk is applied a spring 82, whichcan establish contact withanother spring 83 only in the position of thespring 82 which is shown n Flg. 7 and in the corresponding position whenthe disk has rotated half a revolution. In other positions of the diskduring the rotation of the same the spring 82 is held out of contactwith the spring 83. It is thus only during the short moments when thesprings 82, 85 are in contact with one another that the circuit 17, 18is closed. Connected in the circuit 17, 18 is an electromagnet 19, thearmature 20 of which is coupled to the one arm of an angle lever 21,Figs. 3-5. Arranged on the other arm of the angle lever 21 is a spring22 which can be brought, like a pawl, into engagement with the teeth ofa ratchet wheel 23 4 rotatably mounted on a shaft 24. Arranged on thesaid shaft is also the pointer 25 of the distant thermometer, the saidpointer being movable over a scale 26. On said pointer is a pin 27 orother abutment which, on movement of the lever 21 from the position inFig. 5 tothe position in Fig. 4, presses position in which spring 22 isout of engagement with the pin 27. Fig. 3 shows the position in whichthe pointer has been brought back to the zero position.

In Fig. 1, the resistance R,, is so larce with relation to theresistances R, and 2 that if the voltage of the lighting net-work isconstant, the intensity of the current in the circuit 14 can be regardedas constant, in site of change in the resistances R, and 2 on account ofthe differences of the temperature. When the windings of the distantthermometer are connected in parallel with the resistances R, and R asshown in Fig. 1, and the said resistances are connected in series, thecurrent passing through the windings 2-3 and 45 will be proportional tothe voltage drop between the end points 10, 11 and 12, 13, respectively,of the resistances, and, thus, proportional to the temperatures of theresistances. If the temperature be the same in the pipes A and B,containing the resistances R, and R and it, consequently, no differenceof temperature exists between the resistances, the actions of the tworeacting windings 2-3 and 45 will neutralize each other and the pointer25 will be retained in the zero-position. If on the other hand adifference of temperature exists in the supply pipe and the dischargepipe, and, thus, the temperature of R, is higher than that of R thevoltage drop between the-points 10 and 11 will be larger than thevoltage drop between the points 12 and 13, which entalls that a strongercurrent passes through the winding 23 connected to the resistance R,.The pointer 25 will thus make a deflection on the scale 26 proportionalto the difference of temperature in the pipes A and B.

When now for instance 1 cubic meter of water has passed through themeter 16, the circuit breaker 15 will be acted upon so as to close for amoment the circuit 17, 18. The electromagnet 19 hereby attracts itsarmature 20, the lever 21 being thereby turned. The spring 22 is herebyfirst brought into engagement with the pin 27 of the pointer 25 and isbent downward by the said pin and brought into engagement with the teethof the ratchet wheel 23, (Fig. 4) and simultaneously the lever 21 actson the pin 27 so that the pointer will be moved back to thezero-position (Fig. 3) and the spring 22 will rotate the wheel 23 in thedirection of the arrow through a certain angle corresponding to thedeflection of the pointer, z. e. to the difference of temperature.Hereby also the register wheels 28 (Fig. 6) meshing with the wheel 29rotated by the wheel 30 on the shaft 24, will be rotated to a cor-'responding degree and the quantity of heat used can be read ofi directlyon the said wheels 28.

According to the modification shown in Fig. -2, the windings of thedistant thermometer are connected in series with the re sistances R, andR respectively, and the two circuits (3-7 and 89 are connected inparallel to the lighting net-work. In this case two calibrationresistances R, are used. The said device acts as to the rest in the samemanner as does the device shown in Fig. 1.

Obviously, the forms of embodiment shown may be changed as to theconnections as well as with regard to the construction of the differentmembers used without de parting from the spirit and scope of theinventlon. Thus, for instance, instead of the distant thermometer of thekind shown having resistances R, and R, a thermocouple elenllent of anyknown construction may be SPA. used the galvanometer may be of anotherconstruction than that shown.

Having thus described my invention, what I claim is:

1. In an integrating heat quantity meter for hot water plants and thelike, the combination with a temperature measuring device comprisingthermoresponsive means exposed to the flowing hot water to continuallyindicate the difference of temperature between the hot water suppliedand that discharged, of a meter for measuring the quantity of waterpassing through the pi )e system, the said temperature measuring Ci vicebeing an electrical distant thermometer, the indicating member of whichis combined with means for adding intermittently the momentary value ofthe deflections, and the said adding means being combined with the watermeter by means of an electrical device for transmission of motion so asto be mechanically independent of the water meter, in order that at eachtime a certain quantity of water has passed through the meter, the saidadding means may be brought into action and the integrated end value mayconstitute a measure of the heat quantity used.

2. A heat quantity meter according to claim 1, in which the water meteris combined with a circuit breaker arranged in a line (17, 18) connectedto a source of current, an electrical releasing device (19, 20, 21) forthe adding means being connected to the said line in such manner that,at each time a certain quantity of water has passed through the meter,the latter closes the contact device and thereby brings the adding meansinto action.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

BIRGER KOCK.

Witnesses AXEL EHRNER, GRETA PRIEN.

If a. device according to Fig. 1 be-

